Drive along the Hudson River and you'll find a sea of runners, joggers, walkers, and bikers making the most of the open air. The city can be an open field to those who seek a fit lifestyle and there's no better way to exercise than right next to nature. Just with every other activity, New York runs the gamut with ways to kick your body into high gear. Whether you're looking to take a nice walk along the piers or join a yoga studio, New Yorkers keep active in this metropolis. Here's where to go to join them.